[PATCH v2 23/32] mtd: rawnand: tango: convert driver to nand_scan()
From: miquel.raynal@bootlin.com (Miquel Raynal)
Date: 2018-07-03 22:03:26
Also in:
linux-mediatek, lkml
Subsystem:
memory technology devices (mtd), nand flash subsystem, the rest · Maintainers:
Miquel Raynal, Richard Weinberger, Vignesh Raghavendra, Linus Torvalds
Two helpers have been added to the core to make ECC-related configuration between the detection phase and the final NAND scan. Use these hooks and convert the driver to just use nand_scan() instead of both nand_scan_ident() and nand_scan_tail(). Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> --- drivers/mtd/nand/raw/tango_nand.c | 36 ++++++++++++++++++++---------------- 1 file changed, 20 insertions(+), 16 deletions(-)
diff --git a/drivers/mtd/nand/raw/tango_nand.c b/drivers/mtd/nand/raw/tango_nand.c
index f2052fae21c7..fb41e66e9b60 100644
--- a/drivers/mtd/nand/raw/tango_nand.c
+++ b/drivers/mtd/nand/raw/tango_nand.c@@ -517,6 +517,24 @@ static int tango_set_timings(struct mtd_info *mtd, int csline, return 0; } +static int tango_attach_chip(struct nand_chip *chip) +{ + struct nand_ecc_ctrl *ecc = &chip->ecc; + + ecc->mode = NAND_ECC_HW; + ecc->algo = NAND_ECC_BCH; + ecc->bytes = DIV_ROUND_UP(ecc->strength * FIELD_ORDER, BITS_PER_BYTE); + + ecc->read_page_raw = tango_read_page_raw; + ecc->write_page_raw = tango_write_page_raw; + ecc->read_page = tango_read_page; + ecc->write_page = tango_write_page; + ecc->read_oob = tango_read_oob; + ecc->write_oob = tango_write_oob; + + return 0; +} + static int chip_init(struct device *dev, struct device_node *np) { u32 cs;
@@ -566,22 +584,8 @@ static int chip_init(struct device *dev, struct device_node *np) mtd_set_ooblayout(mtd, &tango_nand_ooblayout_ops); mtd->dev.parent = dev; - err = nand_scan_ident(mtd, 1, NULL); - if (err) - return err; - - ecc->mode = NAND_ECC_HW; - ecc->algo = NAND_ECC_BCH; - ecc->bytes = DIV_ROUND_UP(ecc->strength * FIELD_ORDER, BITS_PER_BYTE); - - ecc->read_page_raw = tango_read_page_raw; - ecc->write_page_raw = tango_write_page_raw; - ecc->read_page = tango_read_page; - ecc->write_page = tango_write_page; - ecc->read_oob = tango_read_oob; - ecc->write_oob = tango_write_oob; - - err = nand_scan_tail(mtd); + chip->controller->attach_chip = tango_attach_chip; + err = nand_scan(mtd, 1); if (err) return err;
--
2.14.1